000 00267nam a2200109Ia 4500
008 220201s1993 xx 000 0 eng d
100 _aMATHUR R C
245 0 _aSOURCE BOOK OF SCIENCE PROJECT
260 _aDELHI
_bARYA BOOK DEPOT
_c1993
300 _a286
942 _2ddc
999 _c91382
_d91382